读“中国地形分布图”，回答：

（1）写出图中数码号所代表的地理名称 ①_______________山脉； ②_______________山脉； ③_       

                      山脉； ④_______________高原； ⑤ ______________山脉； ⑥________________盆地；

     ⑦____                盆地； ⑧________________平原。 ⑨_______________平原。 

（2）请在图中用不同符号画出地势三阶段的范围。

（3）简要说明地势三阶段海拔高度、主要地形类型。

（4）我国地势特点是：                                                                                                                           其对气候、河流、交通等的影响，主要表现在：                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       （5）如果我国的地势与目前的正好相反，将会带来怎样的影响？                                                                                                                                                                                                                                                                                                                          

aA(g)bB(g)

达平衡后，保持温度不变，将容器容积增加一倍，新平衡建立时，c_B是原来的 60%，则(   )

A．平衡向正反应方向发生了移动

B．A 物质的转化率变小了

C．B 物质的质量分数增大了

D．a＞b